Forging-dies.



W. D. F'ORSYTH.

FORGING DIES.

APPLICATION FILED Nov. 27. 1914.

Patented 001019,1915.

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W. D. FORSYTH.

- FORGING DIES.

APPLICATION FILED Nov. 27, 1914.

1,157,213. Patented 001.19,v 1915.

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w. D. FoRsYTH. FORGING DIES.

APPLICATION FILED NOV. 2?, 1914.

1,157,213. Patented 0t.19,1915.

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WILLIAM D. FORSYTH, OF YOUNGSTOWN, OI-IIO, ASSIGNOR TO RAILWAY PRODUCTS CORPORATION, OF BUFFALO, NEW YORK, A CORPORATION OF NEW YORK.

rosarino-DIES.

Specification of Letters Patent.

Patented Oct. 19, 1915.

To all whom t may concern:

Be it known that I, VILLIAM D. FonsYrH, a citizen of the United States, and a resident of the city of Youngstown, in the county of Mahoning and State of Ohio, have 'invented anew and useful Improvement in i' method of making car parts .described in will perform the operation above stated in my Patent No. 1,125,296, dated January 19, 1915; namely, the step in which the middle portion of the flat blank between the longi* tudinal slots in said blank is bent lsinusoidally and stretched longitudinally, and the side portions of said blank are simultaneously bent at right angles to their former position.,

The invention has for one of its objects two cooperating dies which are adapted to forge a blank having two longitudinal slots therein terminating short of its ends, andwhich dies will stretch the middle portion ofthe blank between said slots longitudinally without materially affecting the re,

maining portions of the blank.

A further object is to make two dies which one movement, and which will not require additional devices for holding or gripping the blank. y l

A` still Afurther object is to make two dies 4which will not only perfo-rm the. `operation above stated, but will also simultaneously bend the side portions of said blank at right angles to the-ir former positions.

Further objects of the inventions are to attainl certain advantages which will be more fully set forth hereinafter.

Generally stated, the invention consists in two dies whose end portions coperate to grip ther end portions of the blank, and whose middle portions have the surfaces thereof undulated, whereby, when said kdies are brought together, the-middle portion of said blank between the slits in said blank is lbent sinusoidally and stretched longitudinally. y f

In the `accompanying drawing which forms part of this specification, and in which like symbols refer to like parts wherever they occur, Figure 1 is a vertical longi verse section on the line 3-3 on Fig. l; Fig.

4 is a bo-ttom plan view of the upper die or punch; Fig. 5 is a top plan view of the lower die; Fig. 6 is a plan View of the blank, with which the dies are designed to be used; Fig. 7 is a transverse section of the blank, taken on the line 7-7 on Fig. 6; Fig. 8 is a top plan view of the forging made by the dies; Fig. 9 is a side elevation of the forging made by the dies; and Fig. 10 is an end elevation of the forging made by the dies. Referring. to the accompanying drawing, the upper die or punch A preferably `consists of two members l which are fastened together end to` end by bolts 2 and which are hollowed out to make them lighter. The

upper die A is fastened to a. block 3 which is adapted to be bolted or otherwise fastened to the ram of a die press. The longitudinal sides of the upper die A are verti cal, but are farthest apart throughout a re.- gion midway of its ends, said region being equivalent to approximately one-third of the total length of said die. Outwardly in both directions from said middle region, theL the ridges 5 are below the plane of the under y faces of the endportions 4; and the bottoms -of the hollows between said ridges lie in a plane above Vthe plane of the under faces of said end portions 4. The upper die-A preferably has three .ridges 5, a middle ridge and two end ridges. The lower edge of the middle ridge 5 is below the lower edges of the ,end ridges 5. The lower longitudinal edges of the upper die A adjacent to the end ridges 5 are preferably rounded (see Fig. 4).

The lower die B preferablyV comprises three members, Vtwo side members 6 and a middle member 7. The middle member 7 of the lowerdie B is a counterpart; of the upper die A, and the under surface of said upper die A and the top surface of Vsaid middle member 7 are equally distant from each Y other throughout when the dies areV brought together. The middle member 7 ofthe lower Ydie -B also has twoflat end portions 9 which correspond to the under face of end portions 4 of theupper die A; and in the top surface of the middle member 7 between the end portions 4 are three transverse hol-V low or depressions '8 V-shaped in cross-section which correspond to the three ridges of the upper die A. The middle member 7 of the lower die B preferably comprises two pieces 10 bolted end to end to a block'or bar '11, which extends the full length of said l middle member.

side walls of the side members 6, that is, the

l walls yadjacent to the middle member 7, are

vertical throughout the greaterpart of their depth, and are shaped to lit close to the sides of said middle member, so that the space` between said inner wallsof said side members has an outline conforming to the outline ofthe upper die A. The space between the sidemembers 6 of the lower die B, while of the sameoutline as the Vupper die A, isl uniformly larger than said upper die, corre- Y' tions 19 of the blank l5 aresupported by the. side members [6. of the llower die 'B,.and the first `action of the dies is to Vdepress the mid- As theupper die A descends farther, the end portionsQO spending to the thickness of the blank to be forged. The upper edgesof the innerside walls of the side members 6 between the straight end portions thereof are rounded or beveledoif outwardly (see Fig. 5).. Each side member 6 preferably comprises several.

longitudinal pieces bolted together, so that the side members may be easily constructed.

The outer' walls of the side members 6 of the lower die' B. are vertical so that a frame may be placed around them, if necessary, to

die respectively. i Throughout the end por-' tions of theflower die B, this recess is chan-f nei-shaped.

ber l7 of the lower die B rest Yupon a'bolster or bed'platef12offsuitable construction. Thervr sidemembers 6 are heldin proper position by .bolts-(not shown)V which pass through slots in fsaid side members. The middle-V member 7 is held in proper position by pins 13 extending downwardly into'an ejectingAr Y bar 1 4. The ejecting barV 14 extends upwardlythrough an opening in the bolsterlQ and .bears against the block 1 1 of the middle.

member 7 After thedies have forged the ends.

Y said blank. blank, Vand Vare drawnV apart, the ejecting bar 14 is raised by an auxiliary ram` 14a or 'by other suitable means to eject onpush the forging out of the'lower die BJ The dies shown'in the drawing and hereinbefore described are designed tofforge a blank 15(see Figs. 6 and'7) consisting, of a platewhich is of full width approximately'V Y blank in the same direction. In the blank 15' are two parallel slots 17 which extend longitudinally thereof and terminate short of its Said slots 17 divide theblank -15 for vpartof its length between itsfends intov a ymiddle portion 18 betweensaid slots 17 and two side portions 19. Between the ends of Y the slots 17 'Y and the ends ofthe blank 15 l arelat end portionsQO of said blank.V The distance between the slots 17 lis equaltd the Y Y greatest width of the upperfdie In usingthe dies, the blank 15 isplaced on the lower die B, and is positioned thereon 'so that the Ymiddle portion 18 ofthe blank,

thatis theportion between-the slots- 17, is'directly over the space between the side memf bers 6.of'the lower die' B, the'narrow flanges 16 projecting downwardly. "'A's' the upper die A descends, the lower edge of the middle ridge strikes the blank first. The side'porv dle portion 18 of the blank.

Vofsaid upper die A. In this wayfthe end portions 20 of theblank15 are hooked over said end ridges 5 and are also gripped be*- I tween the end portions 4 of the upper die A l and the 'end portions of the lower VdieB, so that the said end'portions 2O of -the'blank 15 `cannot move inwardly towardeach other. Further'downward'movementof the upper' v die Abends the middle vportion 18-of theVVV .blank in opposite directions sinusoidally;

and, since the end portions 20 ofthe blank e A, cannot ,move together, this'sinusoidal.bend-n The side members 6 andthe middlemem ing stretches or elongates the middle portion i,

position at right angles to their originalposition. The side portions 19of, the blank 15"' are preferably bent up at yright angles Vto their original positionfso that they are `fa r'l therapart throughout aregion midway off the ends'of the blank 15 than at the ends'of The distance between the side portions A19 of 'the-'blankV 15 throughoutthe k15, after it has been forged ori-pressed -as above described, (see Figs. 8, 9 and 10) is channel-shaped, and hasv its middleportion Y 18 'bent sinusoidally lengthwise andistretched longitudinally. l

The dies hereinbefore described perform two operations, namely, first, stretching they middle portion of the blank between the slots therein, and second, bendingitheblankintoV a channel-shape. lThe dies are single acting and" dovnot require any movable parts to grip oi' hold the end portions of the blank while its middlev portion is being stretched. Also, special devices for removing the .forging are dispensed with', since themiddle member of the lower die is movable and is used toveject the forging from thellower die.Y

The dies whichare shown and described are designed to be used with a fiat plate as a' blank,y but may be Valtered without departing from my invention so as to be used with blanks made of structural shapes. Also, while the blank is shown as having straight parallel slots therein,`the slots may be curved or otherwise shaped. Also, while the die A is shown and described as the upper'die and as moving vertically into Vthe lower die B, the dies A and B maybe reversed, or arranged to movetogether horizontally, Vand either or both vdies Ymaybe made to move.

Other changes may Vbe made in the construction ofthe dies shown and described without departing from the invention, and I do'not wish to be limited to the details of that construction.

l/Vhatvl claim is: f p

1. -A lower forging die having a longitudinal recess in the upper face thereof, said recess throughout the end portionsV of said die being channel-shaped, the bottom of said recess throughout the middle portion of" said die being formed with a series of straight hollows, and an upper forging die coperating withsaid lower forging die and having theend portions thereof rectangular in cross-sectionvto conform to the end portions of the recess in said lower die said up- 'per die having .throughout the middle portion of its under vface a series of ridges, said ridges corresponding in shape and positiony operating'with said lower die and having on theun'der face thereof throughout a region midway of its ends a series of transverse i'idg'es,`said ridges corresponding in shape and position to said hollows and being adapted to enter said hollows.

of said die, and an .upper die coperating with said lower die and having a downwardly projecting portion shaped to conform to the shape of said recess in said lower die.

A. lower forging die having a longitudinal recess in the upper face thereof, the end portions of said recess being channelshaped, the bottom of said recess throughout the middle portionkof said die having a series of transverse-hollows thereimsaid die consisting of a middle member andtwo side members, one side member being arranged on each side o f said middle member, the upper surface lof said middle member constituting the bottom of said recess, the inner side walls of said side members constituting the side wall of said recess, said middle member being movable vertically between said side members.

l 5. A lower forging die having a longitudinal recess in its upper face, said recess said die beingwider than at the ends of said die, the bottom of said recess throughout the middle portion of said die being formed with a series -0f transverse hollows, and an upper forging die coperating with said lower die, said upper die being shapedv to enter said recess and having ridges throughout the middle portion of its under surface which are adapted to enter said hollows.

6. An upper forging die having a series of transverse ridges on its under surface throughout the middle portion thereof, the end portions of said die being rectangular in crosssection, said Vdie being widest throughout a region midway of its ends, and

a lower die coperating ywith said upper die throughout a region midway of the ends of said recess between said end portions having n a series of transverse hollows therein, the side walls of said recess near the upper edges l thereof and between the end portions of said Y iecessbeinginclined upwardly and downwardly,Y and 'an upper die cooperating withv said Ylower die and having a downwardly projecting portion shaped to conform Ito the shape of saidrecess in said lower die.

. V8. A device for stretching the'ni'iddle portion` of a blank included between, two spaced slots extending Alongitudinally ofsaid blank and terminating short `ofthe ends Vthereof` comprising two coperating-- dies having counterpart end portionsor gripping the `endl portions of Ysaid blank and matching extending longitudinally o said blank and terminating short ofV the ends thereof and Y for bending said blank into a channel-shape, Y said device comprisingy two coperating dies,v' the lower'die having a longitudinal recess Y vtherein,rthe vend portionsoi' said recess beving narrower than theniiddleV portion'Y of 1' Y said'recess, the bottoin'of said recessfhaving Cbpesrof this vpatent maybe obtained forV five cents each, byddressing thelviGomxniiissionei of 'Pz 1tf:iicis.rk

a series of transverse hollows therein,.an upper die having its sides and under face shaped toconorm tothe sides 'and the bottom of said recess of saidlower die, wherebygtheY end portions ofsaidblank are gripped by theend portions of saidvdies the'nniddleV portion-of said blankris bent alongtrans-` Verse linesin oppositedirections;v Y Y vlOpAn Aupper orging die .which is rectangular .ing crossf' section throughout itsl length,v the end portions of Vsaid die being narrower than the. middle portionfthe'reof' Aand having Yflat under' faces; tlie'underrfacre of V said .die adj acenttoleachilat under face projectingv downwardly Vbelow; the plane of between Vi said ridgesV g being undulated," and A lower die* c oppperating withfsaid upper' die: @and having a recess in itsupper faceshaped*l ,A

lto receive said upperdie.

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said'ilat faces, the-under surfaceV of said'die 'K 

